MCi Crusader II 1989 Maintenance Manual page 51

Date
1-1-89
Page ___
2 -_ 23 _ _
MC-9 MAINTENANCE MANUAL
8. Install the drive pinion, bearing cage and new shim pack
into the carrier. See the procedure earlier in this section.
ASSEMBLING THE MAIN DIFFERENTIAL
ANO RING GEAR ASSEMBLY
CAUTION: Do not press a cold ring gear on
the flange case half. A cold ring gear
will
damage the case half because of the tight
flt. Metal particles between the parts
will
cause gear runout that exceeds the Rock-
well specification of .008 inch (0.2 mm).
1. Expand the ring gear by heating the gear in a tank of water
to a temperature of 160°F to 180°F (71 °C to 82°C) for 10 to 15
minutes.
WA~NING: Wear safe clothing and gloves
that will protect you from lniury when you
touch the hot ring gear.
2. Safely lift the ring gear from the tank of water using a lifting
tool.
3. Install the ring gear on the flange case half immediately
after the gear is heated. If the ring gear does not fit easily on the
case half. heat the gear again. Repeat step 1.
4. Align fastener holes of the ring gear and flange case half.
Rotate the ring gear as needed.
5. Install the bolts. nuts and washers that hold the ring gear
10
the flange case half. Install the bolts from the gear side of the
assembly. The bolt heads must be against the ringgear(Figure
2-62).
BOLT HEAD
AGAINST GEAR
Figure 2-62. Installing Ring Gear Mounting Bolts.
6. Tighten the bolts and nuts·to the correcttorque value. See
the torque chart later in this section.
7. When rivets are used to hold the ring gear to the flange
case half, install the rivets as follows:
CAUTION: Do :,ot heat rivets before instal-
lation. Use only ~old rivets to fasten the ring
gear correctly on the flange case half.
a. Install the correct size rivets in pairs opposite each
other from the case half side of the assembly. The rivet heads ·
must be against the flange epse half (Figure 2-63).
Figure 2-63. Installing Rivets.
b. Press the rivets into position from the ring gear side of
the assembly. Use a riveter machine and apply the correct
amount of pressure. See following chart for rivet pressures.
Diameter of
Rivet Body Press Pressure Needed to Install Rivets
inch (mm)
pounds / tons kilograms
I
metric tons
.438 (11.13)
44,000
I
22 19.958
I
20.0
.500 (12.70)
60.000
I
30 27,216
I
27.2
.563 (14.30) 12,000
I
36 32.659
I 32.1
.625 (15.88) 90.000
I
45 40.824
I
40.8
CAUTION: The pressure on rivets must
held for approximately one minute so that
the rivet body
will
flll the hole.
c. After the rivets are installed. check for gaps between
the back surface of the ring gear and the case flange. Use a .003
inch (.08 mm) feeler gauge and check at four points around the
assembly (Figure 2-64).
Figure 2-64. Checking Gap.